How it works:
Join a library
Create an account and join a library! 'Libraries' are independent groups within which books can be shared. Libraries are invititation-only, so you'll need to get a join link from the person who manages the library.
Register your books
You can register your copy of a book by using it's ISBN code (usually found on the back of the book). This will add it to your account, and other people who are in the same libraries as you will be able to view and request it.
Borrow and share
You now have access to the collection of everyone else in your libraries. You can request any book you find on the website, and organise transfer with the owner. Once you're done, return the book to it's owner and they will mark the book as being returned.